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copied!<p>With your current HTML:</p> <pre><code>$('input').focus(function(){ $(this).prev().addClass('active'); }).blur(function(){ $(this).prev().removeClass('active'); }); </code></pre> <p><a href="http://jsfiddle.net/davidThomas/A8J3E/" rel="nofollow">JS Fiddle demo</a>.</p> <p>Or, with <code>on()</code> (assuming you're using jQuery 1.7, or above):</p> <pre><code>$('input').on('focus blur', function(e){ var prev = $(this).prev(); prev[e.type == 'focus' ? 'addClass' : 'removeClass']('active'); }); </code></pre> <p><a href="http://jsfiddle.net/davidThomas/A8J3E/1/" rel="nofollow">JS Fiddle demo</a>.</p> <p>More abstracted (so the HTML stucture doesn't matter), selecting by the <code>for</code> attribute:</p> <pre><code>$('input').on('focus blur', function(e){ var label = $('label[for="' + this.id + '"]'); label[e.type == 'focus' ? 'addClass' : 'removeClass']('active'); }); </code></pre> <p><a href="http://jsfiddle.net/davidThomas/A8J3E/2/" rel="nofollow">JS Fiddle demo</a>.</p> <p>References:</p> <ul> <li><a href="http://api.jquery.com/addClass/" rel="nofollow"><code>addClass()</code></a>.</li> <li><a href="http://api.jquery.com/attribute-equals-selector/" rel="nofollow">Attribute-equals (<code>[attribute="value"]</code>) selector</a>.</li> <li><a href="http://api.jquery.com/blur/" rel="nofollow"><code>blur()</code></a>.</li> <li><a href="http://api.jquery.com/focus/" rel="nofollow"><code>focus()</code></a>.</li> <li><a href="http://api.jquery.com/on/" rel="nofollow"><code>on()</code></a>.</li> <li><a href="http://api.jquery.com/prev/" rel="nofollow"><code>prev()</code></a>.</li> <li><a href="http://api.jquery.com/removeClass/" rel="nofollow"><code>removeClass()</code></a>.</li> </ul>

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